Car-coupling



(No Model.)

J. G. MITCHELL.

GAR COUPLING.

No. 343,473. Patented June 8, 1886.

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NITED STATES PATENT trio,

JAMES CHARLES MITCHELL, OF LANCASTER, ASSIGNOR, BY MESNE ASSIGN- MENTS,TO SAID MITCHELL, AND B. FRANK BROWN, OF CONCORD, NEW

HAMPSHIRE.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 343,473, dated June8,1886.

Application filed November 30, 1885. Serial No; 184,261. (No model.) I

.TO aZZ whom it may concern:

Be it known that I, J AMES CHARLES MITCHELL, of Lancaster, in the countyof Coos, of the State of New Hampshire, have invented a new and usefulImprovement in Railway-Car Couplings; and I do hereby de' clare the sameto be described in the following specification and represented in theaccompanying drawings, of which- Figure 1 is a top View, Fig. 2 a fronteleva tion or end view, and Fig. 8 a longitudinal section, ofa couplingcontaining my invention, the nature of which is defined in the claimhereinafter presented. Fig. 4 is a top view, and Fig. 5 a sideelevation, of the couplingpin, with its cam in one piece with such pin.Fig. 6 is a top viewof the draw-bar.

In the said drawings, A denotes a car drawbar, provided, as usual, witha flaring mouth, a, to receive a connection-link. There extends upwardvertically through such mouth a passage, b, for reception of thelink-holding pin 13. The said pin has projecting from it down its fronta rib, 0, that terminates in a cam, cl, extending from the pin forwardthereof in manner as represented, the pin, rib, and cam being integralor in one piece.

From the mouth of the draw-bar and opening into the pin-passage b theregoes upward to the top of such bar a passage, 6, of a width or size inhorizontal section a little greater than that of the cam, in order thatthe pin and the cam may be extracted from the drawbar as occasion mayrequire. lowest position the pin is supported by its shoulder f restingon the top of the draw-bar.

On the link being driven into the mouth of the draw-bar, such link willbutt against the curved front edge of the cam, and, continuing toadvance, will force the cam, and consequently the pin, upward, until thelink may bring up against the rear part of the mouth. On the link havingreached such a position the pin and cam will drop into the link and totheir lowest position, and in so doing will couple the link to thedraw-bar.

Within the draw-bar, in rear of its mouth, is a narrow chamber, 5 forthe reception of a gravitating-catch, 71, for supporting the linkpinwith the cam raised above the said mouth. This catch, formed asrepresented, turns freely \Vhen in its on a pin, 41, extending throughit and the drawbar. When forward, the catch brings up against anabutment, It, in the upper part of the said chamber, the catch at thesame time extending underneath the link-pin.

Vhen the pin is up and supported by the catch and the link is driveninto the drawbar, the link will force .the catch rearward from the pinso as to allow the latter to drop into the link.

The rib on the front of the link-pin is to keep such pin fromaccidentally turning around so as to cause the cam to catch under thetop or roof of the mouth on the pin being drawn upward.

I herein do not claim a car-coupling constructed as represented in theUnited States Patent No. 259,647, granted to myself and others,assignees of myself as inventor, as I have in my present car-coupling noelevating pawl hinged or pivoted to the link-pin; nor do I claimcar-eouplings as described and represented in the United States PatentsNos. 182,856 and 267,142, as in my car-coupling the pin has a cam foreffecting its rise by the link when forced against the said cam, andboth pin and cam play vertically only, and have no lateral or rearwardmotion; and, furthermore, my coupling is provided with a gravi- 30tating catch to hold the pin and cam in their elevated position. In thecoupling of the Patent No. 267,142 there is nothing to be moved by thehook in order to release the catch for it to fall through the link whilethe latter may be entering the draw-bar. In the coupling shown in thePatent No. 187,856 there is to the pin no cam projecting from it and toeffect its rise by the link. Nor do I claim acarcoupling as representedin the United States Patent No. 181,807, which, though having agrav'itating catch to hold up the link-pin, does not have to such pinany cam to effect the upward movement of the pin by means of the linkwhen forced against it when down in its lowest position in the draw-bar;nor do I claim a pin provided with a cam for raising it by the action ofthe link, and also with a lever for lifting the pin out of the link inorder to uncouple the link and pin, all being as shown in the UnitedStates Patent No. 280,016.

My cancoupling has its pin provided with a rib and a cam projectingtherefrom, all of which is to move vertically within the drawbar,constructed, as described, to permit of such; and, furthermore, my saidear-coupling 5 has a gravitating catch to hold the link-pin in anelevated position, it being very important that the link-pin should movevertically.

I claim The combination of the draw-bar provided 1:, with the mouth, thecatch-chamber, and the pin, rib, and cam passages arranged in it, as setforth, with the link-connection pin, its rib and cam, and with thegravitating catch arranged in the said draw-bar and applied thereto,substantially in manner to operate as specix 5 fled.

JAMES CHARLES MITCHELL. \Vitnesses:

R. H. EDDY, R. B. TORREY.

